Water-tube boiler.



- No. 7I4,868. 'Paient ad 1m. 2, 1902.

J. C. COOKE. WATER TUBE BOILER.

(Application filed 6c;- 4, 1901.)

(No Model.) 3 Shee1s-8heat l.

see.- Inventor:

No. 7l4,868. Patented Dec. 2. I902.

J. c. CO0KE.-

WATER TUBE BOILER.

{Application filed Oct. 4, 1901.)

3 slieets sheoi 2.

(No Model.)

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UNTTED STATES PORATION OF NEW JERSEY.

PATENT OFFICE.

PENNSYLVANIA, ASSIGNOR TO NEW OF CAMDEN, NEW JERSEY, A COR- WATER-TUBEBOILER.

.JPECIFICATION forming part of Letters Patent N 0. 714,868, datedDecember 2, 1902. Application filed October 4, 1901. Serial Ne. '77,5l4.(No model.)

To all whom, it may concern;

Be it known that I, JOHN C. OOOKE, a citizen of the United States ofAmerica, residing in the city and county of Philadelphia, in the Stateof Pennsylvania, have invented a certain new and useful Improvement inWater-Tube Boilers, of which the following is a true and exactdescription, reference being had to the accompanying drawings, whichform a part thereof.

My invention relates to water-tube boilers, and has for its object togenerally improve the construction of such boilers with a view ofincreasing their efficiency and structural strength.

The nature of my improvements will be best understood as described inconnection with the drawings in which they are illustrated, and inwhich- Figure 1 is a longitudinal section through my improved boiler onthe line 1 1 of Fig. 2. Fig. 2 is a rear View of the boiler with some ofthe back plates of the casing removed to show the rear headers andconnections. Fig. 3 is a view of the top of one of the rear headers,taken as on the line 3 3 of Fig. 2. Fig. at is a cross-sectional Viewthrough the bottom of one of the side headers, taken as on the line 4 lof Fig. 2. Fig. 5 is a front view of the boiler with the transverse drum shown partly in section and one of the front doors removed, and Fig. 6is a side elevation taken as on the line 6 6 of Fig. 2.

The boiler is made up of a series of intermediate front and rearheaders, (indicated, respectively, atA and 13,) these headers beinginclined upwardly and rearwardly and connected by a series ofwater-tubes, (indicated at (3,) said Water-tubes being inclined down-Wardly and rearwardly. Across the upper end of the boiler I place atransverse water and steam drum, (indicated at D,) the front headers Aconnecting through the bottom of this drum, as indicated at a a. Thedrum D is also connected with the tops of the rear headers by means ofthe circulating-pipes, (indicated at E.) As shown, the drum D has aperforated baffle D, situated immediately above the inlet Z. Below theends of the rear headers Bis situated a mud-drum, (indicated at F,) andwith which the lower ends of the rear headers connect, as indicated at bb, &c.

G G are the front side headers, connecting with the drum D through thenozzle 9 and having their upper portions inclined with andsubstantiallyabutted against the intermediate header O, While their lower ends G areprolonged below the header 0 and made substantially vertical.

I-I indicates the rear side headers, which, like the headers G, conformin angle to the rear headers B, situated between them, but are prolongedbelow said intermediate headers, preferably in a vertical direction, asindicated at H H. These rear side headers H are secured to and connectedwith the muddrum F by nozzle h, and they are connected together at topby a transverse tube connecting their upper ends, as indicated at I. Thefront and rear side headers are connected by side-wall tubes J J,&c.,running at substantially the same angle as the tubes 0, and also by aseries of tubes (indicated at J J, &TC-) which diverge from the rearheader downwardly to their connection with the front header, as bestshown in Figs. 1 and 6. The upper ends of the rear headers H areconnected with the drum D by water-tubes, (indicated at K K.)

L indicates a bridge-wall, between which and the front wall M of thefurnace are situated the grate-bars N and the furnace-chamber above saidgrate-bars, said furnace-chamber beingsituated between the divergingsidewall tubes J, connecting the side headers.

M indicates the furnace-door.

O is a deflector extending from the top of the bridge-wall L upwardlyand forwardly, so as to direct the products of combustion from thefurnace against the bottom of the water and steam drum D. as shown.

P is a deflecting Wall or cover supported, as shown, on the'tubes E andhaving a depending deflector-plate P, which forces the products ofcombustion after they have passed over the deflector O to pass downwardover the intermediate part of the tube 0 and then upward over their rearportions into the takeofi flue, (indicated at Q.)

The circulation of water in the boiler is from i their lower endsextending substantially verthe drum D downwardly and rearwardly throughthe water-pipes K and E into the upper parts of the rear side headers IIand of the intermediate headers B, thence downwardly through saidheaders and upwardly and forwardly through the conduits O, J, and J intothe front headers G and A, and thence through the nozzle 9 and a intothe drum D. Sedimentary matter is caught in the muddrum F, which alsoserves as a reservoir, supplying water, if necessary, through the nozzleh to the lower ends of the rear side headers, thus insuring an amplesupply of water to the bottom tubes J, forming the side walls of thefurnace.

The rear intermediate headers B are firmly locked in position betweenthe side headers H, which are rigidly held together by means of theirconnections with the mud-drum and their connections through the tube I.

The deflecting system shown exposes the bottom of the drum D toexceedingly high temperature, which is highly desirable, and at the sametime provides for the best distribution of the products of combustionover the tubes 0.

Having now described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. In a water-tube boiler having atransversely-set steam and water drum above the front end thereof and afurnace-chamber set below said front end and divided from the rear endby a bridge-wall, a baffle-plate extending upwardly and forwardly fromthe top of the bridge-wall to direct the products of combustion againstthe bottom of the transverse drum and a second downwardly-extendingbaffle-plate set between the first baffle and the rear end of the boilerto direct the gases downward over the intermediate part of the tubes andupward over their rear ends.

2. In a water-tube boiler having inclined central headers connected byinclined tubes, side headers inclined through their upper ends with thecentral headers and having their lower ends extending substantiallyvertically in combination with side-wall tubes connecting the front andrear side headers.

3. In a water-tube boiler having inclined central headers connected byinclined tubes, side headers, inclined through their upper ends with thecentral headers and having tically, in combination with side-wall tubesconnecting the front and rear side headers, the lower side-wall tubesdiverging from each other upwardly.

4. In a water-tube boiler having inclined intermediate headers andinclined watertubes connecting said headers, a transverse water andsteam drum situated above the front or higher end of the boiler andconnecting with the tops of the front headers, circulating-tubesextending from the drum to the upper ends of the rear headers, and atransverse mud-drum connecting with the lower ends of the rear headers;side headers running parallel with and abutting against the intermediateheaders throughout the length of said intermediate headers, the frontside headers connecting, like the intermediate headers with thetransverse water and steam drum, and the rear headers being connectedand in communication with the ends of the mud-drum, in combination witha tube connecting and securing together the ends of the rear sideheaders, side-wall water-tubes connecting the rear and front sideheaders and circulating-tubes connecting the water and steam drum withthe upper ends of the rear side headers.

5. In a water-tube boiler having inclined intermediate headers andinclined watertubes connecting said headers, a transverse water andsteam drum situated above the front or higher end of the boiler andconnecting with the tops of the front headers, circulating-tubesextending from the drum to the upper ends of the rear headers, and atransverse mud-drum connecting with the lower ends of the rear headers;side headers running parallel with and abutting against the intermediateheaders, throughout the length of said intermediate headers, andextending below the intermediate headers in substantially verticaldirection, the front side headers connecting like the intermediateheaders with the transverse water and steam drum, and the rear headersbeing connected and in communication with the ends of the mud-drum incombination with a tube connecting and securing together the ends of therear side headers above the rear intermediate headers,side-wall'water-tubes connecting the rear and front side headers, thelower connecting-tubes diverging from rear to front, andcirculatingtubes connecting the water and steam drum with the upper endsof the rear side headers.

6. In a tubular boiler the combination with a series of intermediateheaders B of side headers extending above the said intermediate headers,a water-tube connecting and securing together the upper ends of saidside headers and a mud-drum to which the lower ends of said side headersconnect and to which they are secured.

J. O. COOKE.

Witnesses:

CHAS. F. MYERs, D. STEWART.

